Arch hook



Sept. 19, 1944. I GUSTAFSON 2,358,705

ARCH HOOK Filed July 31, 1942 31 wcnhva Patented Sept. 19, 1944 UNITED 2,358,705 I AncHeHooK Henry Gustafson, Astoria, Oreg. Application July 31, 1942-, Serial No. 453,141

.6 Claims. cl. 24-123) Thi invention relates to arch hooks for lo chockers or cables.

An object of this invention is to provide an improved coupler for a chocker or cableiengaging about a log during the dragging of the log which i will eliminate any twisting. of the.- chocker or cable.

Another object of this invention is to provide a swivel. coupler which will permit rotation of the logwithout torsional or twisting strain. on the chocker or cable. r

IA further object of this invention is to provide azswivel coupler of this kind. which will facilitate the connection of. the vchocker or draft cable with the pulling. member and provide an economy in the amount of cable necessary to produce the chocker. V V

A-further object of thi invention is to provide a swivel coupler which includes a slotted body, a clevisswivelly connected to the body, and an improved means for releasably locking an end of a cable. in a slot so that the cable cannot accidentally become released during the dragging of the log. 7

With the foregoing objects in view, and others which may hereinafter more fully appear, the invention consists of the novel construction combination and arrangement of parts a will be more specifically referred to. and illustrated in the. accompanying drawing, butit is to be understood that changegvariations and modifications may be resorted to whichfall within the scope of the invention as claimed.

In the drawing:

Figure 1 is a detail side elevation of an arch hook constructed-according to an embodiment of this invention. I

Figure 2 is a fragmentary sectional view, partly in elevation, taken on the line 22 of Figure 1.

Figure 3 is a section taken on the line 3-3 of Figure 1.

Figure 4 is a sectional view, taken on the line 4-4 of Figure 1.

Figure 5 is a sectional view, taken on the line 5-5 of Figure 4.

Referring to the drawing the numeral I designates generally an elongated body which i provided lengthwise thereof with a bore or opening I I. A shank I2 is rotatably or swivelly mounted integral head I4, of annular construction, which has formed integral therewith, an eye I5. A clevis I6 is pivotallymounted on a clevis pin I1 extending through the arms ofthe clevis I6, and

" through the'eye' I5. The body is formed lengthwise thereof with apair of lengthwise channel or sockets I8 which terminat rearwardly of the forward end of the body -I 0' and open through the rear end thereof. The body I0- is also formed with an elongated lengthwise slot I9 communicating with the socket I8. The body I0 is also formed at the rear end of the'socket I8, with a passage extending through the rear endofthe slot I9',so that the enlarged end; 21 of a flexible draft member or cable 22 may be extended through the passagelll and this. enlarged end then 7 moved: forwardly: to the: forward end of the socket I8; The. enlargement 2t may be in the form of a in the bore I I and is provided at its forward end with a head I3 engaging the forward end of the body II] so as to hold the shank I2 against endwise movement in one direction. The head I3 may be formed by upsetting the adjacent end of the shank I2, or by any other suitable means.

The shank I2, at its rear end, is provided with an knot'or'ferrule: which is fixed to the adjacent end of the flexible member 22 so that when the enlargement H is within the socket I8 the flexible member 22"willbe fi'rmly secured to the body II]. There are shown two offithese sockets I8 in the body I0, but it will berunderstood that there may be anydesired number ot'these sockets, depending upon the number of chockers or cables which are to beconnectedtothe coupling device herein disclosed. v 1

In ordert'o provide a means whereby the flexible member 22'wi1l have the-enlargement 2| thereof locked inthe socketIIi, I haveprovided a rotatable locking member 23 which is rotatable on the shank I2 and interposed between the head I4 and the rear end of the body II). The rotatable locking member 23 is releasably held against rot'ation by means of a spring-pressed pin 24. The pin 24 is slidable in a passage 25 which is formed in the body I0, and opens through the rear end thereof outwardly from the bore H3. The pin 24 is urged rearwardly to a locking position by means of a spring 26 and in order to limit the movement of the pin 24 this pin has been provided with an annular channel or groove 21 in which a set screw 28 loosely engages. The set screw 28 is threaded in the body I0, across the opening or passage 25, and normally abuts against the forward end of the groove 21. The rear end of the pin 24 i normally disposed rearwardly of the rear end of the body Ill, and is engageable in a selected one of a pair of notches 29 which are formed in the locking washer 23.

The flexible member 22 is adapted to have a hook 30 secured to the forward end thereof, and this hook is adapted to engage the flexible member 22 rearwardly of the forward end thereof,

when the flexible member 22 is wrapped about a log thereby forming a slip-loop which is tightened When a pulling. force is exerted on the coupling member, includin the body In and the clevis l6.

With a construction as hereinbefore described, the log may rotate independently of the draft device, as the log is being dragged along the ground and by reason of the rotatable mounting of the body ID on the shank l2, the clevis I6 will not rotate with the rotation of the log and of the body I 0. Furthermore, by providing the body 10 with the longitudinal sockets IS, the chockers or flexible members 22 may be formed out of a length of cable substantially shorter than is possible with the coupling devices at present in use. Furthermore, by providing the locking member 23 at the rear ends of the sockets l8, the flexible members 22 or chockers will not accidentally become disengaged from the coupling device as in order to remove the enlarge-' ment 2! ,from thesocket 18 it is necessary to' depress the pin 24 engaging in one of the notches 29, and then shift'the locking member 23 so that the desired notch 29 thereof is in registry with the rear end ofthe socketrl8. The passage 20 is suificiently smallin size so that the enlargement cannot be removed from the socket l8 .until the locking member 23 has one'notch 29 thereof in registry with the selected socket I8." I i What I claim is:"

1. In an arch hook for log chockers comprising an elongated body formed with an elongated lengthwise socket and a'lengthwise slot opencarried by said head, a clevis rockably engaging said eye, a locking member rotatable on said shank between said body and said head, said locking member formed with a notch for registry with said socket whereby a log chocker may be released from said socket, and a spring pressed locking pin carried by said body engageable in said notch for holding said locking member in locking position.

3. In an arch hook comprising an elongated body formed with an elongated lengthwise socket and a lengthwise slot opening into said socket, a shank member rotatably engaging in said body, a head on one end of said shank, an eye carried by said head, a clevis rockably engaging said eye, a locking member rotatable on said shank between said body and said head,

said lockin member formed with a notch for from said log socket, and releasable means carried by said'b'ody iorholding said locking mem her in locked position. Y 7

2. In an arch hook comprising an elongated body formed with an elongated lengthwise socket and a lengthwise slot opening into said socket,

a shank member rotatably engaging in said' body, a head on one end'of said shank, an eye registry withsaid socket whereby a log chocker.

may b released from said socket, a spring pressed locking pin carried by said body engageable in said notch for holding said locking mem ber inv locking position, said' pin having an elongated peripheral groove,.and a screw carried by said body extending into said groove to thereby limit the endwise movement of said pin.

4. An arch hook for log chockers including a swivel coupler forconnection with a pulling member whereby the log may rotate without torsional strain on said chocker, said coupler including a' slotted body and a clevis swivelly connected to said body, and means carried by said body for releasably'locking an end of a cable in a slot to-hold the cable against release during the dragging of the log;

5. An arch hook comprising a body-formed with a socket and a slot opening into said socket, a shank member rotatably engaging in said body, a locking member rotatable on said shank, and means carried by saidshank member for holding said locking member in locking position.

6. An arch hook comprising a body formed with a socket and a slot opening into said socket, a shank member rotatably engaging in said body, a locking member rotatable; on said shank, and means carried by said shank member for holdin said locking member in looking position, said means including a spring'pressed locking pin carried by said socket and a notched keeper carried by said shank for" engagement with said pin.

HENRY GUSTAFSON. 

